<!DOCTYPE html>
<html>
<head lang="en">
    <meta charset="UTF-8">
    <title></title>
</head>
<body>

<form action="index01.php" method="post">
    用户名：<input name="username" type="text" placeholder="请输入用户名字"/>
    <br/>
    <br/>
    密码 ：<input type="password" placeholder="请输密码"/>
    <br/>
    <br/>
    <input type="submit" value="提交"/>
</form>

</body>
</html>